Half to william g



(No Model.)

0. P. PEST.

AIR HEATING APPARATUS. No. 398,715. Patented Feb. 26, 1889.

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UNITED STATES PATENT OFFICE.

CHARLES P. FEST, OF PHILADELPHIA, PENNSYLVANIA, ASSIGXOR OF ONE HALF TO IVILLIAM G. TOPLIS, OF SAME PLACE.

AIR-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 398,7 15, dated February 26, 1889.

Application filed May 22, 1888. Serial No. 274,714. (No model.)

To all 207mm it may concern:

Be it known that I, CHARLES P. FEST, of Philadelphia, (German town,) in the county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Air-l-Ieating; Apparatus, of which the following is a specification.

This invention relates to an improved apparatus for heating quickly large quantities of air for the purpose of inflating balloons and causing them to rise, and for other purposes in which a large body of heated air is required; and theinvention consists of an airheater composed of a wick-holding cylinder supported on suitable legs, said wick-holding cylinder being provided with an exterior annular chamber for the admission of liquid hydrocarbon fuel and with upwardly-extending tubes, through which the vapors generated in the annular chamber are omitted.

The chimney is attached to the upper end of the wick-cylinder, and a vertically-adjustable interior cylinder is provided at thelower inside part of the wick-cylinder for regulating" the size of the flame and thereby the quantity of air heated by the apparatus.

In the accompanying drawings, Figure 1 represents a vertical central section of my improved apparatus for heatin air; and Pi 2 is a horizontal section of the same in line .r, Fig. 1.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents a wick-cylinder that is made of suitable sheet metal and is partly covered at the inside by a wick, ll, of asbestus or other suitable noncombustible substance. The wick B is retained at the upper and lower ends by the inwardly-bent overlapping ends A of the cylinder A, so as to expose an interior cylindrical surface to the flame. The wick-cylinder A is provided outside of the wick B with an annular channel, C, which forms a supply chamber for the liquid hydrocarbon that is supplied by pipes D from a suitable tank or reservoir, D, which is located some distance from the air-heating burner. The annular chamber C keeps the wick B supplied with liquid fuel, so that 011 igniting the same at its inner surface a cylindrical flame is produced,

which establishes a strong air current by d rawing' in the air from below the wick-cylinder. The wick-cylinder A is supported on suitable legs, a a, and is provided at the upper end with a chimney, E, and at the lower part with an interior wick-regulating cylinder, F, that is adjustable lngher or lower by means of a fixed rack, F, attached to a diametrical bar, E of the cylinder F, and a pinion, G, the spindle G of which is operated by a milled disk, G the pinion meshing with the rack and raising or lowering the cylinder F, so as to expose a greater or smaller surface oi the wick, and consequently produce a greater or smaller flame by the same, according to the quantity of air that is to beheated. From the annular channel C tubes l-I extend in an upward direction, said tubes passing to the interior of the chimney Eand conveying the vapors generated in the channel by the heatof the burner to the upper part of the chimney, where they are emitted and utilized. The tubes ll have to be of such length that their orifices are above the level of the liquid fuel. By the heat of combustion the liquid fuel is vaporized, so that a rapid and lively combustion takes place, which draws in the air with suitable force at the lowerpart of the apparatus and emits it in highly-heated condition atthe upper end of the chimney, from where it is conducted to the place of use.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination of a wick-cylinderhaving; a channel, an asbestos or other wick sup ported by the wick-cylinder, a chimney ap plied to the upper end of the wick-cylinder, and a vertically-adjustable interior cylinder for regulatingthe size of the flame, substantially as set forth.

2. The combination of a wick-cylinder, a wick supported at the upper and lower ends by said cylinder, an annular channel formed in the wick-cylinder outside of the wick, a pipe for supplying]iquid fuel to the same, upwardly-extending tubes for conducting the vapors from said channel, and a chimney at the upper end of the \viclccylinder, substalr tially as set forth.

3. The combination, with a wick-cylinder, a wick supported at the upper and lower ends by said cylinder, an annular channel in the In testimony that I claim the foregoing as '10 Wick-cylinder extending around the Wick, a my invention I have signed my name in prespipe for supplying'liquid fuel to said channel, ence of two subscribing witnesses. a chimney applied to tlze upper end of the 5 wick-cy1inder,a vertically-adjustable interior CHARLES P. FEST.

cylinder for regulating the size of the flame, V and vapor-tubes connected to said channel \Vitnesses: and extended in upward direction into the 1 WM. G. TOPLIS, chimney, substantially as set forth. CHAS. WV. SWEENEY. 

